ASTROSAT CZTI

Data Quality Report

Orbit 27005

Creation date: 2024-06-27T19:35:29.200394
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A09_145T01_9000003900_27005cztM0_level2.evt modeM0/AS1A09_145T01_9000003900_27005cztM0_level2_quad_clean.evt
Size (bytes)696,720,96070,274,880
Size664.4 MB 67.0 MB
Events in quadrant A9,284,399320,129
Events in quadrant B3,699,078464,745
Events in quadrant C3,437,695448,684
Events in quadrant D4,231,711432,327

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0321500
B0149900
C0141760
D0168660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6613229134.643883%
B66131452.192651%
C6613891.345834%
D66131392.101920%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7612 6612 1933 1933 25.39% 29.23%
B 7613 6613 78 78 1.02% 1.18%
C 7613 6613 0 0 0.00% 0.00%
D 7613 6613 94 94 1.23% 1.42%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 6 16 3856554 26068.82 737 723 147.9
A 14 235 2549131 17229.49 737 723 147.9
A 8 192 29746 196.22 737 723 147.9
B 15 222 180875 1091.95 857 835 164.9
B 0 189 143246 863.73 857 835 164.9
B 12 111 19509 113.26 857 835 164.9
C 14 238 134050 678.07 836 842 196.5
C 3 233 37988 189.08 836 842 196.5
C 14 225 6767 30.16 836 842 196.5
D 11 176 668100 3337.73 835 811 199.9
D 1 239 245843 1225.63 835 811 199.9
D 2 250 95948 475.87 835 811 199.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter